11809870032 has 40 divisors (see below), whose sum is σ = 30564673696. Its totient is φ = 3929417856.

The previous prime is 11809870003. The next prime is 11809870043. The reversal of 11809870032 is 23007890811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198643 + ... + 251154.

Almost surely, 2^11809870032 is an apocalyptic number.

11809870032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11809870032 is an abundant number, since it is smaller than the sum of its proper divisors (18754803664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11809870032 is a wasteful number, since it uses less digits than its factorization.

11809870032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450355 (or 450349 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 11809870032 in words is "eleven billion, eight hundred nine million, eight hundred seventy thousand, thirty-two".